Spark 常用的读取数据api
Spark读取数据API spark.read.format("json").load(path) spark.read.format("text").load(path) spark.rea ...
花费 5 ms
Spark DataFrame常用API
Spark DataFrame常用API package com.imooc.bigdata.chapter04 import org.apache.spark.sql.{DataFram ...
spark-shell和spark-sql
1.启动spark-shell ./spark-shell --master local[2] --jars /usr/local/jar/mysql-connector-java-5.1.4 ...